<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div class="t_main_in">
    <div class="ta">已注册用户数量</div>
    <div class="ta" style="font-size: 30px;margin-top: -30px">90</div>
</div>
</body>
</html>

<style>
    .t_main_in {
        display: flex;
        flex-direction: column;
        height: 160px;
        width: 240px;
        margin: 10px;
        border: 1px solid #adadad;
        background-color: #ffffff;
    }

    .ta {
        display: flex;
        flex-direction: column;
        height: 160px;
        width: 92%;
        margin: 10px;
        text-align: center;
        padding-top: 12px;
        font-size: 20px;
    }
</style>